Media Files

Other Classification Systems

Universal Soil Classification System - a Working Group under Commission 1.4 (Soil Classification) which is part of Division 1 (Soil in Space and Time) of the International Union of Soil Sciences (IUSS)

World Reference Base (WRB) - The WRB, along with Soil Taxonomy, serve as international standards for soil classification. The WRB system is endorsed by the International Union of Soil Sciences and developed by an international collaboration coordinated by the IUSS Working Group. The WRB borrows heavily from modern soil classification concepts, including Soil Taxonomy, the legend for the FAO Soil Map of the World 1988, the Référentiel Pédologique, and Russian concepts.